Die-stock.



RJ: HEBERT. lmasTocK.l APPLICATION lFILED APR. 2l. 1917'.

:1 $41,?? Pmtedseptf 25,1917,

' INVENT'OH 0111* Hebevc I.

f am. lerares isa/rana* @for-trucs.

lRaZMBTU'Iar J. HEBERT, DF WORCESTER, MASSACHSETT Din-STOCK. y

To all (whom t may concern.'

Be it known that 1, RAoUL vJ.. Henner, a citizen fof the United lStates, residing at Worcesten'in the 'countyof VVorcester fand State lof h/Iassachusetts, have invented-'cen tain new and useful improvements in Die- Stocks, `of which vthe :following is a specification.

This invention relates to die stocks #and the prima-ry objectief the invention is .to provide a stock'for holding a die, and'provided with means to guide the stock on the work, whereby .a `perfectly stnaight thread wilfl be formed..

Another objectof the invention is to provide adjustablev work engaging members c carried by the die ,stock to 'act-as guide members "inadvance of the die, thus assuring the proper formation o'f the threads fon the work.

A further object of 'this invention is the provision of a die stock which consists of comparatively few parts and is simple in construction, but durable and well adapted to withstand the'rough usage to which devices of this character are ordinarily subjected.

For a full description of the invention and the advantages and merits thereof, reference is to be had to the following description and the accompanying drawings, wherein is illustrated the preferred form of my invention, in which;

Figure 1 is a side elevation partly broken away.

Fig. 2 is a similar view, the stock being partly shown in sectionto disclose the interior.

Fig. 3 is a bottom plan view partly broken away, showing the adjusting screw.

Fig. 4 is a top plan view.

.Fig 5 is a detail plan of two guide jaws constructed in accordance with a modified arrangement.

Fig. 6 is a same jaws.

Referring to the drawing, wherein is illustrated the preferred form of my invention, and in which like numerals of reference indicate corresponding parts throughout the several views, the stock consists of the central casing in the formA of a block 1 having the oppositely extending handles 2 of any desired length for the purdetail perspective view of the ySpecification of LetteIs'Patent. PatQnt-Qd Sept, 25, 191

applicaties area 4apra 211, 1er?. sesamo. marea.

pose @of rotating the-stock when operating the same. The casing has a relatively large circular 'recess v3 in which a die, of the usual construction, may be placed and which is shown by broken lines in Figs. 2 and l of the drawing. .Extending through an opening in the side of the casing is a set screw 1, adapted to 'engage th-e sifde of the ydie within the recess 3 to hold lthe die lin rigid position within the recess.

In the opposite Iside of the casing is 'a transverse .channel 6 .in which a pair 'of jaws 6 and '7 fare mounted. rThe aw f6 has a t-ri' angular depression 8., while the jaw 7 has a triangular' tongue 9 adapted to extend into ythe depression 8, and the terminal of the tongue is cut out as at 10, so that fthe apex 'of the triangular depression -8 may coa'et with the cuteout 10 to engage an article extended through the center of the die stock. Gommunic-ation between the recess '3, and the channel 5 is established by an opening 11, while the bottom yof the stock has a vsmaller opening 12, thus providing a continuous passageway from the top to the bottom of the stock casing.

The jaws 6 and 7 are slidably mounted in the channel 5, and are adjusted through the medium of an adjusting screw 13 engaged with screw threaded openings 14 provided in the jaws 6 and 7, and which are oppositely 'threaded with right and left hand threads to obtain the necessary movement when vthe screw is rotated. A knurled head 15 is carried bv the end of the screw to facilitate its rotation.

The open ends of the channel 5 are normally closed bv end plates 16 secured to the casing in any preferred manner, and the screw 13 is rotatably mounted in the plates to maintain a certain pre-determined position when rotated so that the necessary movement may be imparted to the guide jaws. These jaws are disposed considerably below the die which will be mounted in the recess 3 when the device is in operation. By turning the screw, the jaws may be adjusted to engage a pipe or rod upon which the screw threads are to be formed. The contacting portions of the jaws serve to guide the stock so that the die will be held in perfect longitudinal alinement with the pipe or rod thus assuring perfect threads when the die engages the pipe or rod and performs threads. ,Y

In Figs. 5 and 6, I have illustrated a modified construction for the jaws, andit `the operation of cutting thel will benoted thatl theyV are adapted toV be received in a channel of the size of the channel 5 in the casing 1. The jaw 17, and n the jaw 18 are each provided with projecting guide langes19 and 20. The guide' posed' staggered relation, the `flanges serve y From the foregoing itwill-be to guide vthe stock in which they are mount-l ed, so thatl the die will beheld to properly7 engage the work' upon which the threads are .being formed.l v

that a verysimple and durable die stock has been provided, the `details of which embody the preferredfform. Ivdesire it to be undern stood, however, that slight changes in `the n minor details of construction maybe made,

opiesof this patent inay'be obtained for observed without departing from the spirit ofther invention or .the'scope of the claimy hereunto appended.

I claim: c p 'A' die stock comprising a rectangular Ablock having integral arms extending from dian'aetrically opposite side edges thereof,

a die seat in one face and 'a jaw seat extending transversely across the other parallel .face from edge: to edge thereof andv opening through said edges, a relativelyv small opening connecting said seats, the side walls of said jaw seat being'nndercut, vjaws litting the undercut walls of'said jaw. seat and slidable 4therein across saidV opening, said jaws .having registering oppositely threaded `bores extending parallel with said under l cut 4sc atwallsyan adjusting screw threaded to operate in said bores to move said jaws toward and away from each other, and

plates Aclosing the end of said jaw seat and inv which said screwismounted to rotate to adapt ity-to maintain a predetermined position relative to said jaws when rotated to insure their free sliding movement in ysaid seat.

v In testimony .whereof I'afx my. signature in presence of two-witnesses.

.. ,-'RAGULQI HEBERT. Witnessesfyf f j EDMUND J. BoURDoo, lLEOPOLD J. DEsRosIERs.

five cents each, by addressingV the"(!ommissioner f Eatentn. Washngton,D.G.; W `f f v 

